html {
    height: 100%;
    overflow: hidden;
}

body {
    background: black;
    margin: 0;
    width: 100%;
    height: 100%;
}

h1 {
    text-align: center;
}

.scene {
    width: 45%;
    height: 90%;
    margin: 5% 5% 5% 50%;

    perspective: 1000px;
}

.book {
    position: relative;
    width: 100%;
    height: 100%;

    transform-style: preserve-3d;
}

.page {
    cursor: pointer;
    position: absolute;
    color: black;
    width: 100%;
    height: 100%;

    transition: 1.5s transform;
    transform-style: preserve-3d;
    transform-origin: left center;
}

.front,
.back {
    position: absolute;

    width: 100%;
    height: 100%;
    padding: 10% 5% 5%;
    box-sizing: border-box;

    backface-visibility: hidden;
    background: -webkit-gradient(linear, 0% 0%, 100% 100%, from(#FFFFFF), to(#CCCCCC));
    background: linear-gradient(to bottom right, #fff, #ccc);
}

.back {
    transform: rotateY(180deg);
}

.page.active {
    z-index: 1;
}

.page.flipped {
    transform: rotateY(-180deg);
}

.page.flipped:last-of-type {
    z-index: 1;
}

p {
    margin: 0 0 0.1em;
    text-indent: 1em;
}

.qr {
    margin: 50px auto;
    max-width: 50%;
}

.qr img {
    display: block;
}
/*rcy*/

/* iPads (portrait) ----------- */
@media only screen
and (min-device-width: 768px)
and (max-device-width: 1024px)
and (orientation: portrait) {
    .scene {
        width: 90%;
        height: 90%;
        margin: 5%;
    }
}